Xtheodor g gurtius



NITE fires assert -Tl-IEODOR CURTIUS, OF ERLANGEN, GERMANY.

HYDRAZEN.

SPECIFICATION forming part of Letters Patent 1W0. 422,334, dated lr ebruary 2 5, 1890. Application filed June 6,1839. Serial No. 313,364. (Specimens) To all whom it may concern-:-

Be it known that I, THEoDoR OURTIUS, doctor of philosophy, a-citizen of the Empire of Germany, residing at Erlarigemiu the En 1 pire cfGermany, have inventedcertain new and useful Improvements-in. the Production of Hydrazin; and I do hereby declare thetoL lowingto be .a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the production of a hydrazin which is to be used in medicine as .medicament. and as raw material for the productlon of antipyretics, and, further, in phoand the salt of hydrazin-for example, boiled -with sulphuric acid according to the equation H},-]-3O 0,H,.' The salts of the hydrazin boiled with caustic potassium furhish the hydrate of the hydrazin N HQH O. This body isin form of a colorless liquid, boiling.(boiling-point 119) undecon1- posed, fuming on contact with the air, and haying prominent reducing qualities. By the action of metallic sodium the hydrazin NJ is set free from its hydrate in form of a gas.

'The hydrazin of this application has not been described in any publication new l in print, and'it contains no carbon. The hydrazin (diamidogen) described in the Journal of the Chemical Society, VolusneLlI,

.1887, (abstracts,) is not to be confounded with the phenyl hydrazih, which is often called 45 hydrazin for short. The body is in fact de rived from hydrogen and nitrogen. The relations it bears to the hydra'llin bases are the same as those existing between ammonia and amine bases. Like ammonia, it is a compound radical which has been produced in. a pure state and examined in the form of its salts. It is a clearly-defined chemical body.

\Vhat l claim as new, and wish to secure by Letters Patent, is-

The new product described, expressed by the formula .S ll having prominent reducing qualities, the same being in the form of a gas which is. set free from its hydrate by the action of metallic sodium.

In testimony whereof I affix my signature in presence of two witnesses. TUEODOR ()URTIUS.

Witnesses:

,Jossru REVERDY,

HEINRICH HAHN. 

